Grinding & Classification Circuits

Grinding & Classification Circuits 2017-04-04T06:57:16+00:00
  • To participate in the 911Metallurgist Forums, be sure to JOINLOGIN
  • Use Add New Topic to ask a New Question/Discussion about Grinding.
  • OR Select a Topic that Interests you.
  • Use Add Reply = to Reply/Participate in a Topic/Discussion (most frequent).
    Using Add Reply allows you to Attach Images or PDF files and provide a more complete input.
  • Use Add Comment = to comment on someone else’s Reply in an already active Topic/Discussion.

Rubber Ball Mill Liner Wear Rate Estimation (4 replies)

1 year ago
Oberfuhrer 1 year ago

What formulation should I use for the estimated calculation of rubber type mill liners wear rate?

1 year ago
Amar 1 year ago

Rubber lining since a newer technology and population is still limited it is a proprietary item and design calculation shall be available with the manufacturer only. However some text book reference is available with METSO mill lining solution web page.

Jean Rasczak
1 year ago
Jean Rasczak 1 year ago

The wear rate on rubber mill liners (in fact most if not all types of liners) is a function of ore type and PSD, media type and size distribution, mill filling level, speed and operational up-time. I am not aware of a universal formulation to calculate expected wear life. Typically in wet mineral ball mills we see a life time of 2 years (under continuous operation)

Paul Morrow
1 year ago
Paul Morrow 1 year ago

The best advice I can give is to first consult the vendor/manufactory then measure wear each time the mill is shut down for maintenance. From this calculate the expected time to end of life. Further it is advisable to allocate funds and notify vendor at least when expected life is twenty five percent of total or six months, whichever comes first. This will avoid delays of production and much frustration. Also makes the accountants happy which is not a bad thing.

Sandeep Bisht
1 year ago
Sandeep Bisht 1 year ago

With thousands of wet grinding mills running with Rubber Lining and data available with us on mills lined by us; an approximation on expected life can be drawn. Key comparison points being Mill diameter, Media size, Mill speed and Tonnage handled.

The abrasion index of Rubber may vary with changes in these parameters.
Secondary Grinding Ball Mills experience 1-2 years of liner life, depending on tonnage/ball size. Normally Lifter to Plate ratio is 1:2.Tertiary Grinding Ball Mills experience up to 4 years of liner life.

Since, all the mills are unique in their operation and the practical sense in which they run, we do wear measurement during every shutdown. From the readings, a Wear profile is plotted and a series of these inspections give us very close liner life estimation. This also helps in re-designing the lining for higher life by addressing the weak zones. It is like a medical history of the liners. 

Please join and login to participate and leave a comment.

BUY Laboratory & Small Plant Process Equipment

We have all the laboratory and plant equipment you need to test or build/operate your plant.

ENTER our Mining Equipment' Store

We Sell EQUIPMENT for all types of Mineral Treatment PROCESSES and Laboratory Testing needs

Have a Mineral Processing QUESTION?

Come in, ask your question

911Metallurgist Community Forums

Talk to other metallurgists and be helped.


We can IMPROVE ALL PLANTS / Mineral Processing Engineering & LABORATORY Ore Testing

911Metallurgy Engineering

Contact us for process engineering, metallurgical investigations, plant optimization, plant troubleshooting, needs. WE “FIX” METALLURGY.